Does the First Amendment Protect Warrior Religions?

After every Islamic terrorist attack, whether in Europe or the U.S., people ask what can be done to prevent it from happening again. But when the obvious solutions are proposed, they are invariably met with the objection that "you can't do that," or "that's unconstitutional," or words to that effect.

Some of the obvious solutions are to close radical mosques and radical Islamic schools, to monitor suspected mosques, to deport radical imams, and, of course, to restrict Muslim immigration or ban it altogether. If you dare to say such things, however, it quickly becomes apparent that—for many, at least—only politically correct solutions are acceptable. The trouble is, the politically correct crowd doesn't have any solutions. In the memorable words of French Prime Minister Manuel Valls, "France is going to have to live with terrorism."

Catholics are frequently in the forefront of those who object to these "drastic" measures for preventing terrorism in the West. Pope Francis, for example, has made generosity to refugees and immigrants a hallmark of his papacy. Christians, he has reminded us on several occasions, should build bridges, not walls. Others, Catholics among them, have objected that restrictions on Islamic immigration would violate the freedom of religion guaranteed by the Constitution—as would surveillance of mosques and Islamic societies.